function assertDateTimeEqual($date_time1, $date_time2, $delta = 1, $msg = null)
{
$ts1 = (new SimpleDateTime($date_time1))->gmtTimestamp();
$ts2 = (new SimpleDateTime($date_time2))->gmtTimestamp();
if (!$delta instanceof SimpleTimeInterval) {
$delta = new SimpleTimeInterval($delta);
}
$diff = new SimpleTimeInterval(abs($ts1 - $ts2));
$test = $diff->seconds() <= $delta->seconds();
if (is_null($msg) && !$test) {
$diff_str = self::build_time_interval_string($diff);
$delta_str = self::build_time_interval_string($delta);
$msg = "Timestamps should be equal, but differ by {$diff_str} >= " . "{$delta_str} seconds.";
}
$this->assertTrue($test, $msg);
}
$ti4 = new SimpleTimeInterval(0);
$results = array($ti1->toNatural(), $ti2->toNatural(), $ti3->toNatural(), $ti4->toNatural('long', 'h'));
return $results == $expected;
};
$unitTests['Greatest Exact Unit'] = function () {
$expected = array('s', 'm', 'h', 'd', 'w', 'M', 'y', 'days', 'years', 'years');
$tiS = new SimpleTimeInterval(array('s' => 5));
$tiMin = new SimpleTimeInterval(array('m' => 5));
$tiH = new SimpleTimeInterval(array('h' => 5));
$tiD = new SimpleTimeInterval(array('d' => 5));
$tiW = new SimpleTimeInterval(array('w' => 5));
$tiM = new SimpleTimeInterval(array('M' => 5));
$tiY = new SimpleTimeInterval(array('y' => 5));
$tiCase1 = new SimpleTimeInterval(259200);
$tiCase2 = new SimpleTimeInterval(array('y' => 1));
$tiCase3 = new SimpleTimeInterval(array('y' => 5));
$results = array($tiS->greatestExactUnit('short'), $tiMin->greatestExactUnit('short'), $tiH->greatestExactUnit('short'), $tiD->greatestExactUnit('short'), $tiW->greatestExactUnit('short'), $tiM->greatestExactUnit('short'), $tiY->greatestExactUnit('short'), $tiCase1->greatestExactUnit('long'), $tiCase2->greatestExactUnit('long'), $tiCase3->greatestExactUnit('long'));
return $results == $expected;
};
$unitTests['All Units in All Formats Present'] = function () {
$expected = array('short' => array('s', 'm', 'h', 'd', 'w', 'M', 'y'), 'abbrev' => array('secs.', 'mins.', 'hours', 'days', 'weeks', 'months', 'years'), 'long' => array('seconds', 'minutes', 'hours', 'days', 'weeks', 'months', 'years'));
foreach (array('short', 'abbrev', 'long') as $format) {
if (SimpleTimeInterval::units($format) != $expected[$format]) {
return false;
}
}
return true;
};
$unitTests['Singularize Units'] = function () {
$expected = array('short' => array('s', 'm', 'h', 'd', 'w', 'M', 'y'), 'abbrev' => array('sec.', 'min.', 'hour', 'day', 'week', 'month', 'year'), 'long' => array('second', 'minute', 'hour', 'day', 'week', 'month', 'year'));
foreach (array('short', 'abbrev', 'long') as $format) {
